28820740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{110849}}^1$

素因数の和:110871

約数の個数: 24

約数和(自身を含む): 65179800

約数和(自身を除く): 36359060

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 110849, 221698, 443396, 554245, 1108490, 1441037, 2216980, 2882074, 5764148, 7205185, 14410370, 28820740]

約数ペア:

[(1, 28820740), (2, 14410370), (4, 7205185), (5, 5764148), (10, 2882074), (13, 2216980), (20, 1441037), (26, 1108490), (52, 554245), (65, 443396), (130, 221698), (260, 110849)]